摘要
四苯硼钾重量法测定有机-无机复混肥中总钾含量时,采用EDTA络合的方法不能有效屏蔽杂质阳离子的干扰。通过实验证实,在弱碱性条件下,使杂质阳离子生成氢氧化物沉淀过滤分离,能有效消除干扰离子的影响,保证了测定结果的准确性。
Total potassium content in organic-inorganic compound fertilizers was determined by potassium tetraphenylborate gravimetric method . EDTA complexation method could not shield the disturbance of impurity cation effectively. The experiments showed that under the alkalescence conditions, the impurity cations could be precipitated and separated, so the influence of interference ion was eliminate and the determination accuracy was guaranteed.
出处
《化工技术与开发》
CAS
2009年第2期28-30,共3页
Technology & Development of Chemical Industry
关键词
钾含量
重量法测定
有机-无机复混肥
potassiumcontent
determination
potassium tetraphenylborate gravimetric method
organic-inorganic compound fertilizers
